United States Government Publishing Office publisher pbl distributor dst United States Interior Department National Park Service author aut Government Organization text government publication eng GOVPUB Executive Agency Publications executive 2023-08-31 Interior Department 2011-01-01 monographic harvested born digital 2 digital object pages I 29.6:P 28 https://www.govinfo.gov/app/details/GOVPUB-I29-PURL-gpo92606 P0b002ee1c04cc7de 001052687 https://purl.fdlp.gov/GPO/gpo92606 (OCoLC)1037945648 DGPO 2023-08-31 2026-06-27 GOVPUB-I29-PURL-gpo92606 machine generated eng fdlp I29 GOVPUB-I29-PURL-gpo92606 PURL-gpo92606 GOVPUB This content was harvested from online sources of the original hosting or authoring agency and may not reflect current policy. As Federal agencies add publications to their websites, or report new publications to GPO per statutory mandate (44 U.S.C. §§ 1710, 1902-1903), GPO ensures long-term preservation of and access to the content. 2011 PERM_INGEST_04282022 gpo92606 https://www.govinfo.gov/app/details/GOVPUB-I29-PURL-gpo92606 https://www.govinfo.gov/content/pkg/GOVPUB-I29-PURL-gpo92606/pdf/GOVPUB-I29-PURL-gpo92606.pdf Tunnels Chesapeake and Ohio Canal National Historical Park 0651 (online) Chesapeake and Ohio Canal National Historical Park (Agency : U.S.) issuing body. dcu National Park Service 2011. monographic 1 online resource (2 unnumbered pages) : illustrations I 29.6:P 28 0651 (online) text eng National Park Service, U.S. Department of the Interior, Chesapeake and Ohio Canal National Historical Park. "6/2011." Chesapeake and Ohio Canal National Historical Park Tunnels Chesapeake and Ohio Canal National Historical Park (OCoLC)1037945512 https://purl.fdlp.gov/GPO/gpo92606 http://npshistory.com/brochures/choh/paw-paw-tunnel-2011.pdf https://catalog.gpo.gov/fdlpdir/locate.jsp?ItemNumber=0651&SYS=001052687